<?php

/**
 * LoginForm class.
 * LoginForm is the data structure for keeping
 * user login form data. It is used by the 'login' action of 'SiteController'.
 */
class LoginForm extends CFormModel
{
	public $username;
	public $password;
	public $rememberMe;

	private $_identity;

	/**
	 * Declares the validation rules.
	 * The rules state that username and password are required,
	 * and password needs to be authenticated.
	 */
	public function rules()
	{
		return array(
			// username and password are required
			array('username, password', 'required'),
			// rememberMe needs to be a boolean
			array('rememberMe', 'boolean'),
			// password needs to be authenticated
			array('password', 'authenticate'),
		);
	}

	/**
	 * Declares attribute labels.
	 */
	public function attributeLabels()
	{
		return array(
			'rememberMe'=>'Remember me next time',
		);
	}

	/**
	 * Authenticates the password.
	 * This is the 'authenticate' validator as declared in rules().
	 */
	public function authenticate($attribute, $params) {
            if (!$this->hasErrors()) {
                $user = User::model()->getUserFromUsername($this->username);
                if (!$user)
                    $this->addError('username', 'Tên đăng nhập không đúng');
                else
                if (!$user->checkPassword($this->password)) {
                    $this->addError('password', 'Password không đúng');
                } else {
                    $this->_identity = $user->id;
                }
            }
        }

	/**
	 * Logs in the user using the given username and password in the model.
	 * @return boolean whether login is successful
	 */
	public function login()
	{            
            if ($this->_identity == NULL) {
                return FALSE;
            } else {                
                $user = User::model()->findByPk($this->_identity);            
                if($user->login($this->rememberMe))                        
                    return TRUE;
                else
                    return FALSE;
            }
	}
}
